SU63091A1 - Remote control device - Google Patents

Description

Remote control radio radio has recently acquired an extremely important: important value. However, as can be judged by the article; K. M. Pruden (see translation: cInf. Bul. Technical Communications .4 for 1940), even in the latest American systems of remote control of 1 1 radio receivers and transmitters, control is carried out only by plus and minus pulses of direct current that allows only three independent operations.

In the proposed remote control system with the help of 1i ;.Pulses of constant current of different non-value, it is easy to carry out an incomparably larger number of independent operations than the existing systems.

These "direct current pulses, according to the invention, act on the receiving station with automatic frequency control of the frequency response), and the controlled relays | B1 are switched on at the output of the inverters through resonant filters.

The essence of the invention is illustrated in FIG. 1-3 of the attached drawing, which show the principle

device circuitry and its application to wired communication and radio.

FIG. 1 shows a block diagram of the device. Here: G is a generator, the frequency of which is controlled by a constant voltage E; Ф Ф Ф ... ф-filters for fixed frequencies; D - vypr mitel "; Pi, PiP „-relay.

The application of a certain voltage E to the input of the generator 1, the corresponding frequency f appears at its output, which is passed by the corresponding filter F, and the corresponding relay is triggered. When applying a smaller Pulse, the frequency will be less and the relay whose filter is tuned to this frequency will work. Thus, picking up ten. OR more different values of pulses, it is possible to get independent control of ten and more relays by one DC circuit.

Permanent time of the chain: • D setrs are selected so that the relays do not have time to operate in time; setting the pulse and its decay (in the opposite case, when the pulse E was turned on, all the relays could have tripped).

The implementation of duplex sending pulses (sending pulses with a return signal of the correct operation of the relay) is schematically shown in Figs. 2

On: npHeMiHOM mats are installed twice as many filters as on the transmitting generator, Fi generators, G-z N & Both ends of the line are the same. When the key Ki fi of the line closes, a current flows at which the frequency of the oscillators Ft and Fa breaks down the resonance1 0th frequency of the filter Φ |. In this case, the receiving-end relay PI is triggered. The PI relay in: the moment was triggered either directly or through the circuits controlled by it for closing key K ;. Due to this, to-to-likli increases to the value at which the frequency of geyperpOBi with automatic frequency control (AFC) becomes stable with equal resonant frequency F). In this case, the relay P remains activated. Due to the current passing through FC, the control relay Pl will operate at the transmitting end. With zamzhaiii KI releases the relay Pi (open Kl I1 Pl). Similarly obtained with all other pairs of relays.

For remote control of the radio software, it is enough to transmit a signal of a certain frequency, but of different amplitudes, to radio this signal at one time and use the received direct current to control the frequency of the generator with the HF of the usual order. In this case, there is a need for a sys- tem of a p1-tomical re1-uryl and a loud (APF) system that would react to the board, but not by changing the amplitude of the transmitter signal.

For this, along with a control signal of frequency f with adjustable ampeLutod, a co-control frequency fo is generated with a constant A1 M1 amplitude. The frequency of f-2 is taken so close to fi that the fadiigi and other electrical interferences act on Jia of them in the same way. The APF circuit from the signal is added to the receiving end of the signal in such a manner as shown in FIG. 3

Frequency is divided into two; e circuits at the reception box. The frequency fi is amplified and detected by the amplifier U to the top by the Mat D, after which the voltage is generated for the ARF. The frequency-fa is detected by the rectifier Dg. Supplement, wuxi: a gene amplifier with direct current (UPT), serves for automatic volume control, changing the potential of the bias to the network and the amplifier V.

By selecting the desired BI gain of the APF Circuit, you can get automatic adjustment of the signal level E.

It is also possible, using the conventional APF circuit from the frequency fi, to transmit the control pulses to short-circuit, sufficiently and only for the actuation of the receiving relay. If we now choose a constant ARG time longer than and -pulses, the device will be e (it will react effectively to feeds and other airborne interferences. To increase the stability of the system in relation to short-o-time It is also possible to apply shallow frequency modulation of the signal to airborne interference.

Subject and d ore of

A device for remote control with a power supply pulse — in a bone-current — of various amplitudes, affecting the receiving point on the lamp generator, that, as a gene-generator, a generator with an auto.matic frequency control is used, and an up-down control is connected to the output of this generator through frequency filters and outputrs.